JP3518413B2 - Discharge method of electronic components in tray feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray feeder for supplying a tray storing electronic components to a pick-up position by a transfer head of an electronic component mounting apparatus for ejecting unmounted electronic components. It relates to the discharge method.

[0002]

2. Description of the Related Art In an electronic component mounting apparatus, a method using a tray feeder is known as a method of supplying electronic components such as semiconductor chips. In this tray feeder, a tray in which a plurality of electronic components are stored in a plane is housed in a container such as a magazine, and the tray is sequentially taken out from the magazine according to the order of use and supplied to the pickup position of the transfer head. At this pickup position, electronic components are picked up by the transfer head in sequence.

The picked-up electronic component is then mounted on the substrate. Generally, the electronic component is inspected prior to mounting by recognizing the image of the electronic component held by the transfer head. In this inspection, different parts other than the predetermined parts and parts that should not be mounted due to a shape / posture defect are detected. Then, the electronic component determined to be unmountable by this inspection is discharged outside the machine as an unmounted component. Conventionally, for discharging such unmounted components, a method of using one of the pallets holding the tray as a discharging pallet and a method of providing a dedicated discharging mechanism such as a discharging conveyor have been adopted.

[0004]

However, the conventional methods for discharging unmounted components described above have the following problems. First, in the method of using one of the pallets for discharging, the electronic parts held by the transfer head are transferred onto the discharging pallet, so that the discharging pallet and the pallet under mounting which has not been mounted are stored. The operation of changing the position must be performed. Therefore, this replacement operation requires complicated steps, and it takes a long time to discharge the unmounted components. In addition, the method of providing a discharge mechanism such as a conveyor inevitably occupies a space and causes an increase in cost, and it cannot be said that it is appropriate in terms of device efficiency as a countermeasure against unmounted parts that occur only infrequently. there were.

Therefore, it is an object of the present invention to provide a method for discharging electronic parts in a tray feeder which can efficiently discharge unmounted parts.

[0006]

According to a method of discharging electronic components in a tray feeder of the present invention, a pallet is sequentially taken out from a container accommodating a pallet holding a tray storing electronic components and the electronic component mounting apparatus is transferred. A method for discharging an electronic component in a tray feeder for discharging an electronic component that has been once supplied in a tray feeder for supplying an electronic component supplied to a pickup position by a head, wherein the transfer head is at the pickup position. In the picked-up state, the step of temporarily moving the mounting pallet storing the unmounted component, which has been determined to be unmountable by the determination means provided in the electronic component mounting apparatus, to the outside of the pickup position, and the container The unmounted part to the unmounted part which are separately provided close to the pickup position Moving the storage pallet to the pickup position, transferring the unmounted component picked up by the transfer head to the unmounted component storage pallet, and mounting the unmounted component storage pallet on the unmounted component The process of moving to the discharge part and the pickup position
The step of moving the mounting pallet that has been moved to the outside of the container to the pickup position again.

According to the present invention, the mounting pallet storing the unmounted components judged to be unmountable is once moved to the outside of the pickup position, and is placed in the vicinity of the pickup position. Move the unmounted parts storage pallet from the parts discharge part to the pickup position,
By transferring the unmounted components picked up by the transfer head to the unmounted component storage pallet, the unmounted components can be efficiently discharged.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 (a) is a perspective view of a tray feeder according to an embodiment of the present invention, FIG. 1 (b) is a view showing a state in which the tray feeder is connected to an electronic component mounting apparatus, and FIG. 2 is a side view of the tray feeder. 3 is a perspective view of the magazine and drawer of the tray feeder, FIG. 4 is a plan view of the magazine and pallet of the tray feeder, FIG. 5 is a perspective view of an unmounted component storage pallet of the tray feeder, 6
(A), (b), (c), (d) is operation | movement explanatory drawing of the unmounted component discharge operation of the same tray feeder.

First, the overall structure of the tray feeder will be described with reference to FIG. In FIG. 1A, the tray feeder 1 is provided with a pallet supply mechanism having the same configuration, which is symmetrical with respect to the center line CL. The pallet 3 is mounted with the tray 2 in which a large number of electronic components are stored in a grid pattern,
The pallets 3 are stored in a magazine 4 in a stacked state.
Two sets of magazines 4 are vertically fixed to the right and left pallet supply mechanisms. On the electronic component mounting device side of the magazine 4 (front side in FIG. 1A),
A drawer unit 5 is provided for drawing and placing the pallet 3 from the magazine 4. The drawer unit 5 can be raised and lowered by an elevation unit 7, which is an elevation unit.

Above the upper magazine 4, there is disposed an unmounted component discharging section 8 for accommodating electronic components to be discharged without being mounted. A replenishment section 6 is provided. The electronic component replenishing unit 6 takes out the pallet holding the empty tray after the electronic component is picked up, and re-feeds the pallet after replenishing the electronic component.

The above-mentioned elements are housed in a cover case 9, and a cover 10 which can be opened and closed is provided above the supply portion 6. Similarly, a door that can be opened and closed is also provided on the back side of the magazine 4 so that the magazine 4 can be mounted / removed and the pallet 3 can be stored in the magazine 4.

As shown in FIG. 1B, the tray feeder 1 is used by being connected to an electronic component mounting apparatus 11. The rising position of the drawer unit 5 is the pick-up position of the electronic component by the transfer head 12, and the pallets 3 sequentially drawn from the magazine 4 are lifted up by the drawer unit 5 to pick up the transfer head 12. Is supplied to. Then, the electronic components in the tray 2 held by the pallet 3 are picked up by the transfer head 12 and mounted on the substrate 13 positioned in the mounting portion.

Next, the structure of each part of the tray feeder will be described. In FIG. 2, the tray feeder 1 is a caster 20.
Frames 22 and 23 are erected on a base member 21 supported laterally by A and 20B. The frame 22 is provided with an elevating part 7 including a motor 24 and a feed screw 25. By driving the elevating part 7, the drawer part 5 moves up and down. Also frame 22
Is provided with a roller 26 for leveling the tray feeder 1. The level of the tray feeder 1 matches the reference level of the electronic component mounting apparatus by riding the roller 26 on the level matching section provided in the electronic component mounting apparatus.

A magazine accommodating portion 30 is fixed to the frame 23, and the magazine accommodating portion 30 accommodates two upper and lower magazines 4. A door 31 is provided behind the magazine accommodating portion 30, and the magazine 4 can be attached and detached by opening and closing the door 31. By providing a plurality of magazines 4 in the magazine accommodating portion 30, more diverse pallets can be arranged, and the other magazine can be taken out while the mounting work is continued using one magazine. There is an advantage that the pallet can be replenished and replaced.
Above the magazine accommodating section 30, an unmounted component discharging section 8 and a replenishing section 6 are provided. The functions of the unmounted component discharging section 8 and the replenishing section 6 will be described later.

Next, with reference to FIGS. 3 and 4, the pallet 3 stored in the magazine 4 and the drawer portion 5 for drawing and placing the pallet 3 will be described. As shown in FIG. 3, a magazine 4 contains a plurality of pallets 3 stacked in a number of racks (not shown). Pallet 3
A tray 2 in which a large number of electronic components P are stored in a grid is attached to the tray. An engaging portion 3a having a notch is provided at the front end portion (left side in FIG. 3) of the pallet 3.

Two guide members 36 are provided in front of the magazine 4 and extend vertically. A slide member 35 that slides along a guide member 36 is provided at the front end of the table 5a of the drawer 5 that moves up and down in front of the magazine 4, and the table 5a is set at a predetermined position with respect to the magazine 4. It is designed so that it can be raised and lowered while it is held.

The drawer unit 5 has a pallet moving mechanism driven by a motor 34. By driving the motor 34, the moving block 32 reciprocates in the arrow direction on the table 5a. The moving block 32 is provided with two rollers 33, and the moving block 32 is reciprocated in a state in which the roller 33 is engaged with the cutout portion of the engaging portion 3 a of the pallet 3, so that the moving block 32 shown in FIG. As shown in, the pallet 3 in the magazine 4 can be pulled out onto the table 5a, and the pallet 3 on the table 5a can be pushed into the magazine 4 for storage. When the pallet 3 reciprocates, the guide rail 3 provided on the table 5a
The position of the pallet 3 is regulated by the guide member 36 extending vertically and the guide member 36 extending vertically.

The tray feeder for supplying electronic components is constructed as described above, and its operation will be described below. First, in FIG. 1, a tray 2 in which electronic components are stored
The pallet 3 holding the is stored in a predetermined storage position in the magazine 4. When the mounting work of the predetermined pallet 3 in the magazine 4 and the mounting work of the magazine 4 in the magazine storage unit 30 are completed and the electronic component mounting apparatus is activated and the mounting operation is started, the drawer unit 5 first stores the predetermined electronic components. Move vertically to the height position of the pallet 3. Next, as shown in FIG. 4, the roller 34 of the moving block 32 is engaged with the engaging portion 3 a of the pallet 3.
The pallet 3 is pulled out onto the table 5a of the pull-out unit 5 by driving the pallet moving mechanism to move the moving block 32 to the mounting apparatus side in the state of being engaged with.

After this, the drawer portion 5 rises to the pickup position and stops. In this state, as shown in FIG. 1B, the transfer head 12 of the electronic component mounting apparatus 11 moves onto the drawing section 5, and here the drawing section 5 is moved by the suction nozzle.
Electronic components are picked up from the tray 2 held on the upper pallet 3. After that, the transfer head 12 moves onto the substrate 13 to mount electronic components on the substrate 13.

In the process of sequentially repeating this mounting operation, when all the electronic components of one tray 2 are mounted and the tray 2 becomes empty, the drawer section 5 and the replenishment section 6 are connected.
The tray 2 on the table 5a up to the level of
The pallet 3 mounted with is sent to the inside of the replenishing section 6, and the shortage of parts is notified. In response to this notification, the operator takes out the pallet 3 from the replenishing section 6, replaces the empty tray with a new tray, and then returns the pallet 3 to the replenishing section 6. And this pallet 3 is a table 5
Then, the pull-out portion 5 is returned to the pickup position and the mounting operation is continued.

Next, the discharging operation of unmounted components will be described with reference to FIGS. The unmounted component is an electronic component held by the transfer head 12 prior to mounting on a substrate, which is recognized by an image recognition means provided in the electronic component mounting apparatus, and as a result of the recognition, it is determined that mounting is not possible. It is an electronic component that is discharged outside the machine as it is. FIG. 5 shows an unmounted component storage pallet for storing electronic components that are not yet mounted. By mounting the storage frame 40 on the normal pallet 3, unmounted components can be stored regardless of type. It was done like this. The storage frame 40 includes the alignment member 4
It is fixed by the clamp member 42 while being pressed against 1.

Next, with reference to FIG. 6, the discharging operation of unmounted components will be described. As shown in FIG. 6A, at the start of the mounting operation, first, the pallet 3 is pulled out from the magazine 4 by the pull-out portion 5, and the pull-out portion 5 is raised, so that the electronic components are supplied to the transfer head 12. As a result of recognizing the electronic component held by the transfer head 12, if it is determined that the component cannot be mounted, as shown in FIG. The middle pallet 3 is once moved from the pickup position to the outside (in this example, the replenishing section 6 provided above the magazine 4). At this time, it is determined that the mounting is not possible, and the unmounted component P ejected outside the machine stands by while being held by the transfer head 12.

Then, as shown in FIG. 6 (c), the unmounted component storage pallet 3A is moved from the unmounted component discharging section 8 provided separately from the magazine 4 to the drawer section 5, and then the drawer section 5 is opened. And the electronic component (unmounted component) P held by the transfer head 12 is transferred onto the unmounted component storage pallet 3A. After this, FIG.
As shown in (d), the unmounted component storage pallet 3A is returned to the unmounted component discharging section 8. Then, the mounting pallet 3 in which the unmounted components P are stored is moved from the replenishing unit 6 to the pickup position of the table 5a again, and then the mounting operation is restarted.

In the discharging operation of the above-mentioned unmounted parts, even if the electronic parts do not want to deform the leads or the kind of electronic parts weak against impact, the unmounted parts storage pallet 3A can be stored without damaging these parts. Can be collected through. Therefore, it is possible to effectively reuse an unmounted component that is discharged due to a reason other than a defect of the electronic component itself, such as a mixture of different kinds of components or a position defect. Further, since the unmounted component discharging portion 8 and the replenishing portion 6 for temporarily retracting the mounting pallet 3 are arranged close to the pickup position, it is possible to efficiently perform the pallet exchange operation during the discharging operation.

[0025]

According to the present invention, the pallet storing the unmounted components judged to be unmountable is temporarily moved to the outside of the pickup position, and the pallet provided near the pickup position is not mounted. Since the unmounted component storage pallet is moved to the pickup position from the component discharge unit and the unmounted components picked up by the transfer head are transferred to the unmounted component storage pallet, the unmounted component is discharged. It can be performed efficiently and without damaging the electronic components.

[Brief description of drawings]

FIG. 1A is a perspective view of a tray feeder according to an embodiment of the present invention, and FIG. 1B is a diagram showing a connection state of a tray feeder according to an embodiment of the present invention with an electronic component mounting apparatus.

FIG. 2 is a side view of the tray feeder according to the embodiment of the present invention.

FIG. 3 is a perspective view of a magazine and a drawer portion of the tray finder according to the embodiment of the present invention.

FIG. 4 is a plan view of the magazine and pallet of the tray feeder according to the embodiment of the present invention.

FIG. 5 is a perspective view of an unmounted component storage pallet of the tray feeder according to the embodiment of the present invention.

FIG. 6A is an operation explanatory diagram of an unmounted component discharging operation of the tray feeder according to the embodiment of the present invention. FIG. 6B is an operation explanatory diagram of the unmounted component discharging operation of the tray feeder according to the embodiment of the present invention. (C) Operation explanatory diagram of unmounted component discharging operation of the tray feeder of one embodiment of the present invention (d) Operation explanatory diagram of unmounted component discharging operation of the tray feeder of one embodiment of the present invention

[Explanation of symbols]

2 trays 3 pallets 4 magazines 5 Drawer 6 Supply Department 7 Lifting part 8 Unmounted parts ejector 11 Electronic component mounting equipment 12 Transfer head

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Claims (4)

(57) [Claims] 1. A tray feeder for supplying electronic components, wherein a pallet is sequentially taken out from a container accommodating a pallet holding a tray storing electronic components and is supplied to a pick-up position by a transfer head of an electronic component mounting apparatus. A method of ejecting an electronic component in a tray feeder for ejecting a supplied electronic component without mounting the component, wherein mounting is not performed by a determination unit included in the electronic component mounting device in a state where the electronic head is picked up by the transfer head at the pickup position. A step of temporarily moving the mounting pallet storing the unmounted components determined to be possible to the outside of the pickup position, and an unmounted component discharging section provided in the vicinity of the pickup position separately from the container. Moving the unmounted component storage pallet to the pickup position, and the transfer head. A step of transferring the non-mounted part of the picked-up state to the unmounted parts storage pallet, the step of moving the unimplemented parts storage pallets unimplemented component discharge portion is moved to the outside of the pick-up position
And a step of moving the previously mounted pallet to the pickup position again, the method of discharging electronic components in a tray feeder. 2. An electronic component is picked up above the container.
After taking out the pallet holding the empty tray,
A replenishment section is provided to re-load the pallets after replenishing electronic parts.
This replenishment part should be outside the pickup position.
In the tray feeder according to claim 1,
How to eject electronic components. 3. The unmounted component discharging portion is located above the container.
It is provided in the said, The claim 1 or 2 characterized by the above-mentioned.
Ejection method of electronic parts in tray feeder. 4. The replenishment section is above the unmounted component discharge section.
4. The device according to claim 3, which is provided on one side.
Ejection method of electronic parts in ray feeder.